Mac ----> Microsoft

Hi there i am thinking about Buying a new G5 But i would like to no if i can network the g5 to my old Microsoft Machine ????? i no that there are some emulators but i would like not to use then any ideas ?

Just a standard Cat5 cable into a router or a switchover straight to the PeeC.
The setup is much easier on the mac end of it to share files but we can explain the windows setup on here (i think its actually in the manual with new macs)